Description
Emerson KJ2231X1-EE1
Technical Specifications
- Compatible System: Emerson DeltaV DCS Controller
- Communication Interface: High-speed redundant dedicated link
- LocalBus Supply: 12VDC
- Operating Ambient Temperature: 0℃ ~ 60℃
- Storage Temperature: -40℃ ~ 85℃
- Relative Humidity: 5% ~ 95%, non-condensing
- Protection Grade: IP20
- Installation Type: DeltaV rack plug-in module
- Built-in redundancy state diagnosis and automatic switchover circuit
- Front panel LED indicators for controller status and redundancy fault
Functional Features High-speed bidirectional data synchronization circuit keeps process variables and logic state consistent between primary and standby controllers. Automatic switchover circuit completes bumpless controller switchover without interrupting process control. Continuous diagnosis circuit monitors communication link quality and operating state of dual controllers. Front-panel LED indicators display running status of primary and standby controller and redundancy fault alarm. Plug-in rack mechanical design supports hot swap under non-critical process operating conditions. Internal isolation circuit suppresses electrical interference on redundant communication links.
Application Scenarios DeltaV DCS main control cabinets in chemical plants, oil refineries, natural gas processing facilities and pharmaceutical factories. It provides redundancy synchronization and bumpless switchover function for redundant DeltaV controller pairs.
Performance Parameters Data synchronization circuit maintains high-speed real-time data exchange in full rated temperature range. Controller switchover completes instantly without interruption of closed-loop control. Diagnostic circuit captures communication link abnormality rapidly. Communication circuit operates stably under industrial electromagnetic interference environment.
Material Composition Flame-retardant engineering plastic front panel. Multi-layer flame-retardant glass-fiber epoxy printed circuit board. Communication processing microprocessor, dual bus transceiver chips and LED indicators. Gold-plated copper alloy backplane connector with anti-oxidation plating. Metal shielding components for anti-electromagnetic interference.
Structural Features Standard plug-in card matching DeltaV rack slot. Front panel equipped with independent LED indicators for primary controller, standby controller and redundancy fault alarm LED. Guide rails and mechanical latch fix module firmly in rack frame. Rear gold-plated connector mates with DeltaV rack backplane bus. Internal metal shielding suppresses electromagnetic interference impact.
Working Principle The module connects primary controller and standby controller through dedicated redundant communication links and rack backplane. Under normal working state, the module continuously synchronizes control logic, process variables and parameter database from primary controller to standby controller. On-board monitoring circuit checks running state and communication quality of both controllers continuously. When primary controller fails, switchover circuit activates standby controller immediately without interruption of process control. Module generates fault alarm and uploads alarm message to DeltaV operator station once redundancy communication fault occurs.
Installation Requirements Insert module along rack guide rail into assigned DeltaV rack slot and lock mechanical latch. Confirm full engagement between module rear connector and rack backplane. Route redundant communication cables and separate communication cables from high-power cables. Reserve air circulation space around module for heat dissipation. Set redundancy synchronization parameters in DeltaV engineering workstation after hardware installation.
Precautions for Use Carry out anti-static protective measures during module handling. Do not touch gold-plated connector pins directly by bare hands. Inspect communication cable and connector condition regularly. Do not apply overvoltage to communication ports. Do not disassemble module outer housing.
